package com.hxl.service.impl;
import com.hxl.service.UserService;

public class UserServiceImpl implements UserService {

    public void save(int a,int b){
        //0.将共性功能抽取出来
        //System.out.println("共性功能");
        System.out.println("user service running...");
    }

    public int update() {
        System.out.println("update");
        return 100;
    }

    public void delete() {
        System.out.println("delete");
        int i = 1/0;
    }

}
